Creating these fabulous Southwestern Chicken Quesadillas is simple. Just follow these steps:

1. Heat the Oil: In a large skillet over medium heat, add the olive oil.
2. Cook the Vegetables: Sauté the diced onion and red bell pepper until they are softened, about 3-4 minutes. Add the garlic and cook for another minute.
3. Combine Ingredients: Stir in the shredded chicken, black beans, corn, and taco seasoning. Cook until everything is heated through and well combined, about 3-5 minutes.
4. Assemble the Quesadillas: Layer the mixture on one half of each tortilla. Add a generous amount of cheddar and Monterey Jack cheese on top. Fold the tortilla over to create a half-moon shape.
5. Cook the Quesadillas: In the same skillet, add the quesadillas, cooking for about 3-4 minutes on each side or until golden brown and the cheese has melted.
6. Remove and Slice: Once cooked, remove the quesadillas from the skillet and let cool for a minute. Then, slice into wedges.
7. Serve: Serve hot with sour cream, salsa, and guacamole on the side.

This straightforward process guarantees delicious Southwestern Chicken Quesadillas every time.